İnsan Hareketi Dinamiği (Kinematik/Kinetik)
Özet
Bu bölüm, insan hareketini kinematik ve kinetik ilkeler çerçevesinde ele almaktadır. İnsan vücudunun hareketi, kas kuvvetleri, eklem momentleri, yer çekimi, sürtünme ve yer reaksiyon kuvvetleri gibi iç ve dış etkilerin oluşturduğu dinamik bir sistem olarak incelenmektedir. Rijit ve deforme edilebilir biyomekanik modelleme yaklaşımları açıklanarak ileri dinamik, ters dinamik ve sonlu elemanlar yönteminin insan hareketi analizindeki rolleri değerlendirilmektedir. Doğrusal, açısal, tek boyutlu ve çok boyutlu hareket türleri, konum, hız ve ivme kavramlarıyla birlikte ele alınmaktadır. Bölümün kinematik kısmında konum, yer değiştirme, hız ve ivme kavramları ile doğrusal, açısal, eğrisel, periyodik, tek boyutlu ve çok boyutlu hareket türleri matematiksel denklemler, grafikler ve insan hareketinden örneklerle açıklanmaktadır. Bölümün kinetik kısmında ise Newton’un hareket yasaları, kuvvet, tork, momentum, itme, iş, güç ve enerji kavramları insan hareketinden örneklerle açıklanmaktadır. Böylece hareketin hem gözlemlenebilir özellikleri hem de bu hareketi meydana getiren mekanik nedenler bütüncül biçimde sunulmaktadır.
This chapter examines human motion within the framework of kinematic and kinetic principles. Human motion is considered a dynamic system governed by interacting internal and external effects, including muscle forces, joint moments, gravity, friction, and ground reaction forces. Rigid-body and deformable biomechanical modelling approaches are introduced, and the roles of forward dynamics, inverse dynamics, and the finite element method in human movement analysis are discussed. Linear, angular, one-dimensional, and multidimensional motions are explained through the fundamental concepts of position, velocity, and acceleration. In the kinematics section of the chapter, the concepts of position, displacement, velocity, and acceleration, as well as linear, angular, curvilinear, periodic, one-dimensional, and multidimensional types of motion, are explained through mathematical equations, graphical representations, and examples of human movement. Within the kinetics section, Newton’s laws of motion and the concepts of force, torque, momentum, impulse, work, power, and energy are presented using examples from human movement. Overall, the chapter provides an integrated understanding of both the observable characteristics of movement and the mechanical factors responsible for producing and controlling it.
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